WP = Polarity color of lead wires is reversed. Code is added to end of part number.

WLxxx = Custom wire lengths, where xxx is length in mm. Two different wire lengths are both indicated as follows WLxxx/xxx. Example: WL150/250 black wire is 150mm, red wire is 250mm. Code is added to end of part number.
Also WTLxxx = PTFE insulated wire with custom length.

Maximum wire length is 460mm (18.1").

HS = Heat Shrink tubing on lead wires. Code is added to end of part number.

These wire options are only available on specific TECs.
W1 = Lead wires exit on same short side of TEC
W2 = Lead wires exit on diagonal corners of TEC
W3 = Lead wires exit on same long side of TEC

Call for quote on custom wire types and lengths

Standard insulation material for 125°C rated parts is PVC. Teflon (PTFE) insulation is used on 200°C and 300°C rated parts.

Height Tolerance

9th digit of part number, default is "3"

Ask for "Height Matching" when using 2 or more TECs between the same two surfaces. [Height matching is more economical than specifying a tighter height tolerance code for an entire order.] Height matching assures even pressure and heat transfer across the set of TECs.

Add codes to end of part number in purchase orders or specify as a separate line item that you want the TECs sealed.

Sealing protects the internal components from corrosion and electrical "shorts" from moist or wet environments. This includes ordinary environments where you may be taking the cold side of the TEC below the local "dew point" thereby creating condensation and/or ice on the TEC.

Sealing protects the internal pellets from dirt, dust, and other contaminants that may collect there over time. These contaminants may corrode the pellets or eventually create an electrical "short" therby damaging the TEC. Ask for a sealed TEC if your application is in a particularly dusty environment.

Sealing has a minimal effect on the TECs capability to pump heat (Q) and its maximum delta T. Typical effects are 1-2% on heat pumping capacity and 1-2 degrees on maximum delta T.

S = RTV moisture sealed

In the online store, there is an option for "RTV Moisture Sealing". Choose this if you want your TECs sealed.

Epoxy based syntactic foam ruggedization seals the TEC from moisture and debris AND also strengthens the TEC against shock, vibration, and shear forces.

SE = Epoxy edge seal, 2+ mm deep

SR = Epoxy Ruggedized Sealing, 5+ mmm deep

SRX = Epoxy Ruggedized Sealing, 5+ mm deep, with epoxy potting to extend around lead wires following width and thickness of TEC

SRD = Epoxy Ruggedized Sealing, 10+ mm deep or complete fill

SRDX = Epoxy Ruggedized Sealing, deep to 10+ mm or complete fill with epoxy potting to extend around lead wires following width and thickness of TEC

Sectioning (bottom plate only)

Add codes to end of part number

Sectioning of TEC's greater than 1" in cycling and extreme duty applications reduces thermal stresses and extends TEC life. Call for more information.